Please note that the website might change, so if the link doesn’t work, you can search for alternative sources. You can download it from this website: KEYDB.cfg. Next, you need to download the AACS configuration file named KEYDB.cfg. Step 2: Download the AACS Configuration File The apt install command is used to install packages, and libaacs-dev and libbluray2 are the packages we need to install. The sudo command is used to run operations that require root privileges. Open a terminal and run the following command: sudo apt install libaacs-dev libbluray2 If not, you can install it by running the following command in your terminal: sudo apt install vlc Step-by-Step Guide to Fix the Error Step 1: Install the Necessary Librariesįirst, you need to install the necessary libraries, libaacs-dev and libbluray2. Prerequisitesīefore we start, make sure you have the VLC media player installed on your Ubuntu 20.10 system. VLC requires the AACS configuration file to decrypt and play Blu-ray movies. It is used to restrict unauthorized access and copying of Blu-ray discs. AACS, or Advanced Access Content System, is a standard for content distribution and digital rights management. Step 4: Move the Configuration File to the Correct Locationīefore we delve into the solution, it’s important to understand the error.Step 3: Extract and Rename the Configuration File.Step 2: Download the AACS Configuration File.Step 1: Install the Necessary Libraries.